Moisture-extracting apparatus



Jan. 25, 1927. H. JESPERSEN MOISITURE EXTRACTING APPARATUS Filed Dec.- 29, 1924 I /6 0 1 4i 4517 J ll shown in Patna Jan. 25, 192 7.=

* UNITED STATES 1,615,388 PATENT OFFICE.

moo wIeeo JESPEBSEN, or RIVERSIDE, ILLINOIS, ASSIGNOR r wnszrnnn uncirnrc comrmr, INCORPORATED, on NEW YORK, N. Y.,. A CORPORATION or NEW YORK.

- HOISTURE-IilXTRACTING APPARATUS.

Application filed December 29, 1924. Serial No. 758,602.

This invention relates to moisture extracting apparatus, and particularly to a suction-roll for extracting moisture from pulpous material, such as'paper-pulp.

The object of the invention is to provide improved apparatus for extracting moisture from material.

One form of the invention is embodied in apparatus of the type shown and described in thecopending application of J. S. Little,

Seiial No. 725,045, filed July 9, 1924.. Accordin to the features of the invention, cores m strand form having coatings of moist pul are carried by a porous belt over a c lindrical roll which is driven by the belt an has perforations arranged to come into close proximity to the inner side of the belt as the roller revolves. 'Eccentrically mount-- ed with respect to the roller is a pivoted housing having a suction-port which is yieldingly urged toward the inner surface of the roller .m such manner that moisture is drawn from the coatings on the cores,

through the belt, the perforations, and the I! suction-port into the housing.

Other features of the invention will become apparent as the following detailed description progresses, reference being had to the accompanying drawings, wheremso Fi ..1 is a side elevation at a greatly reduced scale of apparatus embodying the invention;

' Fig. 2 is a lo sucti'onsrolll forming a part of the apparatus ig. 1; I

Fi 3 is .an end elevation of the suctionroll own in Fig. 2;

Figs. A and 5 are sections taken on lines 4-4 and 5-5, respectively of Fig. 2, and

Figs. 6 and 7 are enlarged transverse secions which illustrate the manner in which the apparatus shown in Fig. 1 is adapted to apply a coat of pulpous material to a core in strand orm. u Referri toFig. 1, 17 is a tank supplied with liqui containing pulp byany suitable. means (not shown) and 16 is a rotatable drum partially immersed in the liquid con-' tainin pulp held by the tank 17. ,The drum I 16 is riven by a woven belt 7 5 which is held in' contact with the drum by a felt covered roll 76, the belt being driven by a roller Z 7 which is in turn driven by any suitable means (not shown). Thebelt 76-is drawn ngitudinal section through a u on the outer'end of the e w 144 which together wlth a p1 seeover a plurality of idlers 83 and over a suction-roll which is designated in general by the reference character 80. A forming mechanism 90 of the type shown and described in the copending application of H. W. Jespersen, Serial No. 713,703, filed May 16, 1924, is driven by any suitable means (not shown). The apparatus is adapted to coat cores in strand form with pulpous ma- 7 terial, the operation" of the apparatus being as follows: A core 12 in strand form is withdrawn from a supply reel and guided to a 'foraminous portion of the drum 16 which carries the core through the liquid containing pulp in the tank 17in such man-- ner that a ribbon of pulpous material is deposited upon the core. The core with its coating of pulp then travels upon the belt 7 5 over the driven roller 77 and the suctionroll 80, the belt 7 5 coacting with the felt covered roll 76' to squeeze excess moisture from the pulpous material on the core and to impart the form illustrated in Fig. 6 to suchmaterial. Additional moisture is removed from the material by the suction-roll- 80 and the core with its coating of pulp then passes to.the forming mechanism which wraps the ribbon of pulp around itself and I around the core 12 to form a homogenous coating 13 for the core (Fig. 7). The drum 16, the tank 17, the'belt 7 5 and the manner in which the pul ous material is applied to a core in strand orm are described in greater detail in the aforementioned copending application of J. S. Little.

Referring to Figs. 2 to 5, inclusive, the suction-roll 80 comprises-a cylindrical roller having a plurality ofcircumferentially arran ed' perforations 127 and provided at i one 0 its ends with a hub 129 secured toa shaft 130 which is journaled in a. bearing 131 mounted upon a frame member 133. At its other end the roller 125 is rotatably journaled u naisleeve 135 by a ball bearing 137. T e sleeve 135 is rigidl secured in a block 1-39 'mounted upon a rame member 140.; Journaled in the sleeve 135 is apipe 142, the'longitudinal axis of the pipe being eccentrically disposedwith respect to" the axis 'of rotation of the roller 125. Threaded pipe 142v is an tion 145 connects the 'ipe 142 with a exible tubea147. Theflexi 1e tube 147 18 0119 time in the cylindrical wall;

tively connected to any suitable means (not shown) for producing a partial vacuum. Threaded upon the inner end of the pipe 142 is a housing 150 having. a suction-port 152 bounded by a resilient gasket 154:, which is mounted on the housing 150 and is provided with a surface 156 adapted to engage the interior surface of the roller 125. The.

surface 156 is grooved as at 158 to aid the gasket 154 in efi'ectively sealing the suctionport 152 from the interior of the roller 125.

Secured to the outer end of the pipe 1&2 is a sheave 160 to which is secured one end of a cable 162. Secured to the other end of the cable 162 is a weight 16 1 which tends to rotate the sheave 160, the pipe 142 and the housing 150 in a counterclockwise direction (Fig. 3). Referring "to Fig. 5, the weight 16a tends to rotate the housin 150 in a clockwise direction so as to hold he surface 156 in engagement with the interior surface of the roller 125 which is driven in a counterclockwise direction .(Fig. 5) by the belt 75.

Interposed betweenv the sleeve 135 and a collar 166 constrained to rotate with the roller 125 is a clutch 167 comprising rollers 169 which are arranged in grooves 170 out into the sleeve 135 and are urged into convtact with the collar 166 by compression springs 172. The construction is such that the roller 125 may revolve freely in a clockwise direction (Fig. 4), but may not be driven in a counterclockwise direction (Fig. 4.). This is to prevent injury to the apparatus if for any reason the belt 75 is riven in the wrong direction.

In the operation of the suction-roll 80, the

.fiexible tube 14.7 is connected to the means (not shown) for creating a partial vacuum so that when the belt 7 5 carries the core 12 with its coating of pulpous material over the perforations 127, moisture will be drawn from the pulpous material through the belt 75, the perforations 127, the housin 150 and through the pipes 142 and 145 to t e means for creating the partial vacuum, after which the moisture may be disposed of in any suitable manner.

What is claimedis:

1. In moisture extracting apparatus, the combination with a rotatable member having a perforated cylindrical wall, of pivoted means eccentrically mounted relative to the member and having a suction-port operatively confined to a single row of perforce.

2. In moisture extracting apparatus, the combination with a rotatable drum having a perforated cylindrical wall,'of a tube eccentrically mounted relative to the drum, means having a suction-port carried by said tube, and means for yieldingly holding said means in a position wherein the suction-port operatively registers with the perforations in the cylindrical wall of said drum.

3. In moisture extracting apparatus, the combination with a rotatable member hav ing a perforated cylindrical wall, of means for preventing rotation of the member in a direction opposite to its normal direction of rotation, and means having a suction-port operatively disposed with respect to the perforation in the cylindrical wall. I

4. In moisture extracting apparatus, the combination with a rotatable member having a perforated cylindrical wall, of a clutch for preventing rotation of the member in a direction opposite to its normal direction of rotation, pivoted means eccentrically mounted with respect to the member and having a suction-port, and means for .yieldingly holding the pivoted means in a position wherein the suction-port operative- 1y registers with the perforation in the cylindrical. wall.

5. In moisture extracting apparatus, the combination with a member having a single row of perforations, of means having a suction-port permanently confined to register with said single row of perforations, and means for yieldingly holding the means into firm engagement with said member so that the suction-port is operatively disposed with respect to the perforations in the member.

6. In moisture extracting apparatus, the combination with a drum having a perforated cylindrical wall, of means having a suction-port, resilient means carried by said means operatively associated with the interior surface of said drum, and means com prising a pulley operatively connected to said first recited means, and a weight suspended from said pulley for yieldingl olding. the resilient means in contact wit the inner surface of the cylindrical wall in a position to register with the perforations therein.

In witness whereof, I hereunto subscribe 1111};24 name this 16th day of December A. p,

HIELGO WIGGO JESPERSEN. 

